1 /* 2 * Copyright (C) 2003-6 Apple Computer, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef Color_h 27 #define Color_h 28 29 #include <wtf/Platform.h> 30 31 #if PLATFORM(CG) 32 typedef struct CGColor* CGColorRef; 33 #endif 34 35 #if PLATFORM(QT) 36 #include <qglobal.h> 37 QT_BEGIN_NAMESPACE 38 class QColor; 39 QT_END_NAMESPACE 40 #endif 41 42 #if PLATFORM(GTK) 43 typedef struct _GdkColor GdkColor; 44 #endif 45 46 #if PLATFORM(WX) 47 class wxColour; 48 #endif 49 50 namespace WebCore { 51 52 class String; 53 class Color; 54 55 typedef unsigned RGBA32; // RGBA quadruplet 56 57 RGBA32 makeRGB(int r, int g, int b); 58 RGBA32 makeRGBA(int r, int g, int b, int a); 59 60 RGBA32 colorWithOverrideAlpha(RGBA32 color, float overrideAlpha); 61 RGBA32 makeRGBA32FromFloats(float r, float g, float b, float a); 62 RGBA32 makeRGBAFromHSLA(double h, double s, double l, double a); 63 RGBA32 makeRGBAFromCMYKA(float c, float m, float y, float k, float a); 64 65 int differenceSquared(const Color&, const Color&); 66 67 class Color { 68 public: Color()69 Color() : m_color(0), m_valid(false) { } Color(RGBA32 col)70 Color(RGBA32 col) : m_color(col), m_valid(true) { } Color(int r,int g,int b)71 Color(int r, int g, int b) : m_color(makeRGB(r, g, b)), m_valid(true) { } Color(int r,int g,int b,int a)72 Color(int r, int g, int b, int a) : m_color(makeRGBA(r, g, b, a)), m_valid(true) { } 73 // Color is currently limited to 32bit RGBA, perhaps some day we'll support better colors Color(float r,float g,float b,float a)74 Color(float r, float g, float b, float a) : m_color(makeRGBA32FromFloats(r, g, b, a)), m_valid(true) { } 75 // Creates a new color from the specific CMYK and alpha values. Color(float c,float m,float y,float k,float a)76 Color(float c, float m, float y, float k, float a) : m_color(makeRGBAFromCMYKA(c, m, y, k, a)), m_valid(true) { } 77 explicit Color(const String&); 78 explicit Color(const char*); 79 80 String name() const; 81 void setNamedColor(const String&); 82 isValid()83 bool isValid() const { return m_valid; } 84 hasAlpha()85 bool hasAlpha() const { return alpha() < 255; } 86 red()87 int red() const { return (m_color >> 16) & 0xFF; } green()88 int green() const { return (m_color >> 8) & 0xFF; } blue()89 int blue() const { return m_color & 0xFF; } alpha()90 int alpha() const { return (m_color >> 24) & 0xFF; } 91 rgb()92 RGBA32 rgb() const { return m_color; } // Preserve the alpha. setRGB(int r,int g,int b)93 void setRGB(int r, int g, int b) { m_color = makeRGB(r, g, b); m_valid = true; } setRGB(RGBA32 rgb)94 void setRGB(RGBA32 rgb) { m_color = rgb; m_valid = true; } 95 void getRGBA(float& r, float& g, float& b, float& a) const; 96 void getRGBA(double& r, double& g, double& b, double& a) const; 97 void getHSL(double& h, double& s, double& l) const; 98 99 Color light() const; 100 Color dark() const; 101 102 Color blend(const Color&) const; 103 Color blendWithWhite() const; 104 105 #if PLATFORM(QT) 106 Color(const QColor&); 107 operator QColor() const; 108 #endif 109 110 #if PLATFORM(GTK) 111 Color(const GdkColor&); 112 // We can't sensibly go back to GdkColor without losing the alpha value 113 #endif 114 115 #if PLATFORM(WX) 116 Color(const wxColour&); 117 operator wxColour() const; 118 #endif 119 120 #if PLATFORM(CG) 121 Color(CGColorRef); 122 #endif 123 124 static bool parseHexColor(const String& name, RGBA32& rgb); 125 126 static const RGBA32 black = 0xFF000000; 127 static const RGBA32 white = 0xFFFFFFFF; 128 static const RGBA32 darkGray = 0xFF808080; 129 static const RGBA32 gray = 0xFFA0A0A0; 130 static const RGBA32 lightGray = 0xFFC0C0C0; 131 static const RGBA32 transparent = 0x00000000; 132 133 #ifdef ANDROID_CSS_TAP_HIGHLIGHT_COLOR 134 static const RGBA32 tap = 0x4D1A1A1A; 135 #endif 136 137 private: 138 RGBA32 m_color; 139 bool m_valid; 140 }; 141 142 inline bool operator==(const Color& a, const Color& b) 143 { 144 return a.rgb() == b.rgb() && a.isValid() == b.isValid(); 145 } 146 147 inline bool operator!=(const Color& a, const Color& b) 148 { 149 return !(a == b); 150 } 151 152 Color colorFromPremultipliedARGB(unsigned); 153 unsigned premultipliedARGBFromColor(const Color&); 154 155 #if PLATFORM(CG) 156 CGColorRef createCGColor(const Color&); 157 #endif 158 159 } // namespace WebCore 160 161 #endif // Color_h 162